Life In 19x19

Hello
I want a free go teaching ebook from beginner level to advanced. Does anybody know or have any.

Thanks in advance.

What engines can be installed under gogui? please give a link to them.
can any engine match be held under them?

does engines of go have any evaluation?

leichtloeslich wrote:Not sure it qualifies as "the best", but see here.

I want sth for pc. And windows.

Hello everybody.
What is the best Go free GUI including engine?

Thanks in advance.